Flash widget system

I want to create a little flash application, what would implement a widget system. Main points:

• Widgets are separate SWF files, loaded dynamically from a folder
• Active widgets and their position are saved on a given interval
• Widgets can be dragged after a long press (time of press can be set)
• Open source and free
• Not too important but maybe multi-page suppor开发者_StackOverflowt? Something like on iPhone?

Is there any such widget system for Flash?